JP2016043713A - Front passenger seat airbag system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front passenger seat airbag system capable of suppressing the head of a passenger in a front passenger seat that moves obliquely forward toward a center side in the vehicle width direction as a crash occurs from contacting an instrument panel.SOLUTION: A front passenger seat airbag system 10 comprises: a front passenger seat airbag 30 that inflates and deploys in rear of an instrument panel 18 and in front of a front passenger seat 12P in response to the supply of gas; and a small airbag 32 that is smaller in capacity than the front passenger seat airbag 30 and that inflates and deploys on a central side in the vehicle width direction in relation to the front passenger seat airbag 30 and in front of a rear end of the front passenger seat airbag 30 in response to the supply of the gas from the front passenger seat airbag 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a passenger airbag device.

  An apparatus for inflating and deploying an auxiliary airbag between a driver's seat airbag and a passenger's seat airbag is known (for example, see Patent Document 1). The auxiliary airbag is inflated and deployed further rearward than the driver airbag and the passenger airbag in a side view. Further, there is known an apparatus for deploying an air bag for protecting a center occupant provided between a driver seat and a passenger seat from a roof (see, for example, Patent Document 2).

JP 2011-51513 A JP-A-6-80057

  For example, in the configuration in which the passenger in the passenger seat moves obliquely forward and the passenger is protected by the auxiliary airbag described above, it is necessary to secure a mounting space for a large-capacity auxiliary airbag. There is room for improvement from the viewpoint.

  The present invention can prevent the passenger's head of the passenger seat that moves diagonally forward toward the center in the vehicle width direction due to a collision from coming into contact with the instrument panel while ensuring mountability on the vehicle. The purpose is to obtain a passenger seat airbag device.

  A passenger seat airbag device according to the first aspect of the present invention includes a passenger seat airbag that is inflated and deployed in the rear of an instrument panel and in front of a passenger seat upon receiving gas supply, and a capacity smaller than that of the passenger seat airbag. A small airbag that receives gas supply from the passenger airbag and is inflated and deployed on the center side in the vehicle width direction with respect to the passenger airbag and in front of the rear end of the passenger airbag. I have.

  For example, in the case of a frontal collision to a position offset to the driver's seat side in the vehicle body, the passenger in the passenger seat moves forward due to inertia while moving forward. That is, the passenger in the passenger seat moves obliquely forward toward the center in the vehicle width direction due to the collision. Here, in the passenger seat airbag device, together with the passenger seat airbag, the small airbag is inflated and deployed on the center side in the vehicle width direction with respect to the passenger seat airbag and in front of the rear end of the passenger seat airbag. . When viewed from the passenger seat, the small airbag is deployed so as to cover the instrument panel on the center side in the vehicle width direction with respect to the passenger seat airbag. For this reason, as for the passenger | crew head which moves diagonally forward as mentioned above, contact (interference) with an instrument panel is prevented or effectively suppressed by a small airbag.

  Further, since the small airbag has a smaller capacity than the passenger airbag, it can be folded compactly. For example, the small airbag is smaller than a configuration including an auxiliary airbag having the same capacity as the passenger airbag. It can be installed in vehicles in space.

  Thus, in the configuration of claim 1, it is possible to prevent an occupant head that moves obliquely forward toward the center in the vehicle width direction due to a collision from coming into contact with the instrument panel while ensuring mountability on the vehicle. can do.

  According to a second aspect of the present invention, in the passenger seat airbag device according to the first aspect, the small airbag is formed into a bag shape with a base fabric different from the passenger seat airbag, and is inflated and deployed. The front passenger airbag in the state is joined to a front end portion of the side wall facing the center in the vehicle width direction.

  In this passenger seat airbag device, a small airbag that forms a bag body separate from the passenger seat airbag at the front end side (instrument panel side) portion of the side wall of the passenger seat airbag that faces the center in the vehicle width direction. Are joined. Thereby, with a simple structure, it is possible to provide a small airbag that protects the passenger's head that moves obliquely forward toward the center in the vehicle width direction due to a collision as described above.

  According to a third aspect of the present invention, in the passenger seat airbag device according to the second aspect, the small airbag is inflated and deployed along the instrument panel upon receiving gas supply from the passenger seat airbag. .

  In this passenger seat airbag device, the small airbag is inflated and deployed along the instrument panel when gas is supplied from the passenger seat airbag. For this reason, a small-capacity small airbag can be more reliably interposed between an occupant head that moves obliquely forward toward the center in the vehicle width direction and the instrument panel. Moreover, since the small airbag forms a bag body different from the passenger seat airbag, the small airbag can be inflated and deployed along the instrument panel.

  A passenger seat airbag device according to a fourth aspect of the present invention is the passenger seat airbag device according to any one of the first to third aspects, wherein the small airbag includes the small airbag, the passenger seat airbag, and driving. Each of the driver's seat airbags that are inflated and deployed in front of the seat is in an inflated and deployed state in which the occupant is not restrained, and does not interfere with the passenger seat airbag and the driver's seat airbag.

  In this passenger seat airbag device, the small airbag is inflated and deployed in a manner that does not interfere with the passenger seat airbag and the driver seat airbag. For this reason, it is suppressed that a small airbag affects the expansion | deployment deployment (shape after completion, etc.) of a passenger seat airbag and a driver's seat airbag.

  As described above, the passenger seat airbag device according to the present invention has an instrument panel with an occupant head that moves obliquely forward toward the center in the vehicle width direction due to a collision while ensuring mountability in a vehicle. It has the outstanding effect that it can suppress contacting.

1 is a plan view showing a schematic overall configuration in an operating state of a front seat airbag system including a passenger seat airbag device according to a first embodiment of the present invention. (A) is a rear view showing a schematic overall configuration in an operating state of a front seat airbag system including a passenger seat airbag device according to the first embodiment of the present invention, and (B) is 2B- in FIG. 2 (A). It is an expanded sectional view along line 2B. 1 is a perspective view illustrating an inflated and deployed state of a passenger seat airbag constituting the passenger seat airbag device according to the first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the passenger seat airbag which comprises the passenger seat airbag apparatus which concerns on the 1st Embodiment of this invention, Comprising: (A) is an exploded perspective view of an expansion | deployment state, (B) is with respect to a passenger seat airbag. It is an expanded sectional view which expands and shows the joined part of a small airbag. It is a top view which shows the schematic whole structure in the operation state of the front seat airbag system containing the passenger seat airbag apparatus which concerns on the 2nd Embodiment of this invention. It is a top view which shows the schematic whole structure in the operation state of the front seat airbag system containing the passenger seat airbag apparatus which concerns on the 3rd Embodiment of this invention, partially notching a passenger seat airbag.

  A front seat airbag system 11 including a passenger seat airbag device 10 according to an embodiment of the present invention will be described with reference to FIGS. In addition, arrow FR, arrow UP, arrow RH, and arrow LH appropriately described in each figure are respectively a front side, an upward direction, and a right side that is one side in the vehicle width direction of the vehicle V to which the front seat airbag system 11 is applied. The left side which is the other side is shown. In the following description, when using the front / rear, up / down, and left / right directions, unless otherwise indicated, the front / rear direction of the vehicle, the up / down direction of the vehicle, the left / right direction of the vehicle (when facing the front) To do.

[Schematic configuration inside automobile V]
FIG. 1 is a schematic plan view showing a part including a front portion in a cabin C in an automobile V to which a front seat airbag system 11 is applied. As shown in this figure, in the cabin C, a pair of vehicle seats 12 are arranged side by side. Each vehicle seat 12 includes a seat cushion 14 and a seat back 16 having a lower end connected to the rear end of the seat cushion 14.

  In this embodiment, the vehicle seat 12 located on the left side is the driver's seat 12D, and the vehicle seat 12 located on the right side is the passenger seat 12P. Although not shown, a center console is disposed between the driver's seat 12D and the passenger seat 12P. That is, the vehicle V to which the front seat airbag system 11 according to the present embodiment is applied is configured such that the central seat is not disposed between the driver seat 12D and the passenger seat 12P. In addition, it is good also as a structure (For example, the structure which can use as a passage between right and left seats) without a center console.

  Further, the front end of the center console is connected to the vehicle width direction central portion of the instrument panel 18 extending in the vehicle width direction in front of the driver seat 12D and the passenger seat 12P. A steering wheel 20 is disposed on the driver panel 12D side of the instrument panel 18.

[Driver airbag device]
As shown in FIGS. 1 and 2A, the front seat airbag system 11 includes a driver seat airbag device 22 for protecting the occupant D of the driver seat 12D against a frontal collision. The driver's seat airbag device 22 is provided as a module in the steering wheel 20 and includes an inflator 24 and a driver's seat airbag 26. The driver seat airbag device 22 is configured to inflate and deploy the driver seat airbag 26 in front of the driver seat 12D when the inflator 24 is actuated by a command from an airbag ECU 36 described later.

[Passenger airbag device]
In addition, as described above, the front seat airbag system 11 includes the passenger seat airbag device 10 for protecting the passenger P of the passenger seat 12P (hereinafter, also simply referred to as “occupant P”) against a frontal collision. ing. The passenger seat airbag device 10 is provided as a module in the instrument panel 18 and includes an inflator 28 and a passenger seat airbag 30. The passenger seat airbag 30 is inflated and deployed in front of the passenger seat 12P by operating the inflator 28 according to a command from the passenger seat airbag device 10 and an airbag ECU 36 described later.

  Hereinafter, in the description of the shapes of the passenger airbag 30, the driver airbag 26, and the small airbag 32 described later, unless otherwise specified, the respective airbags are inflated and deployed in a state where they do not restrain the occupant (none). The shape of the restrained deployment state.

<Passenger airbag>
The passenger airbag 30 in this embodiment includes a left bag 30L and a right bag 30R, and is configured to be inflated and deployed in a shape that is substantially symmetric in plan view. The boundary line between the left bag 30L and the right bag 30R is configured to substantially coincide with a center line (not shown) in the seat width (vehicle width) direction of the passenger seat 12P.

  In this inflated and deployed state, the rear end of the left bag 30L is positioned in front of the left shoulder of the occupant P, and the rear end of the right bag 30R is positioned in front of the right shoulder of the occupant P. A recess 30N formed between the rear ends of the left bag 30L and the right bag 30R is positioned in front of the head of the occupant P.

  Further, a vent hole 30HL is formed in the side wall 30SL facing the center side in the vehicle width direction of the passenger seat airbag 30, that is, the left bag 30L. A vent hole 30HR is formed in the side wall 30SR facing the outside in the vehicle width direction of the passenger seat airbag 30, that is, the right bag 30R. The vent hole 30HR on the outer side in the vehicle width direction is disposed at the approximate center in the front-rear direction and the approximate center in the vertical direction in the right bag 30R. The vent hole 30HL on the center side in the vehicle width direction is disposed at the approximate center in the front-rear direction and the upper part in the up-down direction in the left bag 30L. That is, the vent hole 30HL is disposed above the vent hole 30HR.

<Small airbag>
The passenger seat airbag device 10 described above includes a small airbag 32 having a smaller capacity than the passenger seat airbag 30. In this embodiment, the small airbag 32 has a smaller capacity than the driver's seat airbag 26. The small airbag 32 receives gas supply from the passenger seat airbag 30 and is inflated and deployed on the center side in the vehicle width direction with respect to the passenger seat airbag 30 and in front of the rear end of the passenger seat airbag 30. It has become. That is, the small airbag 32 is configured to cover a part of the instrument panel 18 on the center side in the vehicle width direction with respect to the passenger seat airbag 30 when viewed from the passenger seat 12P. This will be specifically described below.

(Deployment range of small airbags)
As shown in FIG. 1 and FIG. 2 (A), the small airbag 32 is formed from a root portion (a front end portion on the instrument panel side) of the side wall 30SL facing the vehicle width direction center side of the passenger seat airbag 30. It is configured to protrude toward the center in the vehicle width direction. In this embodiment, as shown in FIG. 2B, the small airbag 32 is deployed along the instrument panel 18 (rear surface), and its deployed shape is a flat shape (for example, thin in the front-rear direction). The developed thickness is about 50 mm). For this reason, the small airbag 32 is configured such that the rear end thereof is positioned largely forward with respect to the rear end of the passenger airbag 30. The small airbag 32 is configured not to interfere with each of the passenger airbag 30 and the driver airbag 26.

  More specifically, the rear end of the small airbag 32 is positioned in front of the steering wheel 20, and the front end of the small airbag 32 in the vehicle width direction is closer to the passenger seat airbag 30 than the steering wheel 20. positioned. In this embodiment, the small airbag 32 has a tip position that coincides with the position of the peripheral edge on the center side in the vehicle width direction of the driver's seat airbag 26, or the front end portion is slightly different from the peripheral edge portion on the center side in the vehicle width direction in rear view. (See FIG. 2A).

  The small airbag 32 covers at least a part of the instrument panel 18 including the central portion in the vertical direction in the vertical direction. In this embodiment, in the vertical direction, the instrument panel 18 in a range that can be reached by the head H of the occupant P who is seated on the passenger seat 12P by wearing a three-point seat belt is covered by the small airbag 32. It has come to be.

  The head H of the occupant P can reach the head of the dummy doll when the collision dummy doll is seated on the passenger seat 12P in the standard sitting posture defined by the collision test method. It is set as a range. In this embodiment, the range that the head H of the occupant P can reach is the AM50 (50th percentile of US adult male), AM95 (95th percentile of US), and AF05 (5th percentile of US adult female) dummy dolls. It is set including the range that the head can reach.

(Small airbag structure)
As shown in FIG. 3, the small airbag 32 described above is formed in a bag shape from a base fabric different from the base fabric constituting the passenger seat airbag 30. It is another bag. This bag body is joined to the passenger seat airbag 30 to form a small airbag 32. Hereinafter, the structure of the small airbag 32 will be described with reference to FIGS. 4 (A) and 4 (B). In FIG. 4 (A), for convenience, the bag body before joining the passenger seat airbag 30 is denoted by “32”.

  Specifically, a window 30 </ b> W for supplying gas to the small airbag 32 is formed on the side wall 30 </ b> SL facing the vehicle width direction center side of the passenger seat airbag 30. On the other hand, as shown in FIG. 4B, the small airbag 32 (a bag body) is formed into a bag shape by forming a seam portion 32S by sewing the peripheral portions of the two base fabrics 34 and 35. A portion that is formed and not sewn is an open end. A projecting portion (flange portion) 32 </ b> F that forms a substantially annular shape as a whole is formed by the two base fabrics 34, 35 around the opening end, and the projecting portion 32 </ b> F extends to the passenger seat airbag 30. The sewn part (sewing allowance part).

  In the bag body constituting the small airbag 32, an overhang portion 32F formed around the opening end is sewn at the peripheral edge portion of the window portion 30W in the side wall 30SL of the passenger seat airbag 30 by the seam portion 30S. Thus, the passenger seat airbag 30 is joined. Thereby, gas is supplied from the passenger seat airbag 30 to the small airbag 32 through the window 30W. In this embodiment, the opposing direction of the two base fabrics 34 and 35 is the thickness direction of the small airbag 32 (the longitudinal direction of the vehicle). In order to regulate the thickness of the small airbag 32, for example, two base cloths 34 and 35 may be connected by an expansion limiting cloth or the like.

  Although illustration is omitted, the small airbag 32 described above is folded together with the passenger seat airbag 30 and stored in the instrument panel 18.

[Airbag ECU]
As shown in FIG. 1, the front seat airbag system 11 includes an airbag ECU 36 as a control device. The airbag ECU 36 is electrically connected to a plurality of collision sensors 38 (one is collectively shown in FIG. 1). The airbag ECU 36 is electrically connected to each of the inflators 24 and 28 of the driver seat airbag device 22 and the passenger seat airbag device 10.

  The airbag ECU 36 can detect various frontal collisions (occurrence or unavoidable) against the applied vehicle V based on information from the collision sensor 38. In this embodiment, the airbag ECU 36 operates the inflators 24 and 28 in each case where a full wrap frontal collision, an offset frontal collision, a minute lap collision, and an oblique collision are detected based on information from the collision sensor 38. It has become.

  In the passenger seat airbag device 10, the inflator 28 may be operated on the condition that an occupant is seated on the passenger seat 12P.

  Here, the minute lap collision is a collision in which the lap amount in the vehicle width direction with the collision partner prescribed by IIHS is 25% or less among the front collision of the automobile V, for example. For example, a collision to the outside in the vehicle width direction with respect to a front side member that is a vehicle body skeleton corresponds to a minute lap collision. In this embodiment, a minute lap collision at a relative speed of 64 km / hr is assumed as an example. Further, the oblique collision (MDB oblique collision, oblique collision) is a collision mode of the barrier Br illustrated in FIG. 1, for example, an oblique forward defined by NHSTA (for example, a relative angle of 15 ° with the collision partner) , The lap amount in the vehicle width direction is about 35%). In this embodiment, an oblique collision at a relative speed of 90 km / hr is assumed as an example. IIHS is an abbreviation for the Insurance Institute for Highway Safety, and NHSTA is an abbreviation for the National Highway Traffic Safety Administration in the United States.

[Action]
Next, the operation of the first embodiment will be described.

  Hereinafter, an operation when the airbag ECU 36 detects a minute lap collision or an oblique collision toward the driver's seat 12D will be described.

  When the airbag ECU 36 detects a minute lap collision or an oblique collision based on a signal from the collision sensor 38, the airbag ECU 36 activates the inflators 24 and 28 of the driver seat airbag device 22 and the passenger seat airbag device 10. Then, the driver's seat airbag 26 that receives gas supply from the inflator 24 and the passenger's seat airbag 30 that receives gas supply from the inflator 28 are inflated and deployed as shown in FIGS. 1 and 2A, respectively. Further, the small airbag 32 that receives gas supply from the passenger seat airbag 30 via the passenger seat airbag 30 is inflated and deployed.

  By the way, in the case of a minute lap collision or an oblique collision to the driver's seat 12D side, the passenger P of the passenger seat 12P moves forward with respect to the vehicle body, and further moves to the vehicle width direction center side, that is, the collision side. (See arrow A in FIG. 1). When the displacement of the head H in the vehicle width direction with respect to the passenger seat airbag 30 due to the movement of the head H of the passenger P toward the collision side is large, the head H has the driver seat airbag 26 and the passenger seat airbag. It will enter between 30. That is, the head H enters between the driver's seat airbag 26 and the passenger's seat airbag 30 while pushing away or slipping through the passenger's seat airbag 30 as indicated by a one-dot chain line in FIG.

  Here, in the passenger airbag device 10, the small airbag 32 is inflated along the rear surface of the instrument panel 18 on the center side in the vehicle width direction with respect to the passenger airbag 30 in the case of a minute lap collision or an oblique collision. Be expanded. As a result, the head H of the occupant P entering between the driver airbag 26 and the passenger airbag 30 contacts the small airbag 32 as shown by the imaginary line in FIG. Contact with the panel 18 is prevented or effectively suppressed.

  For this reason, compared with the configuration without the small airbag 32, the load (reaction force) that the occupant P's head H receives from the instrument panel 18 in the case of a minute lap collision or oblique collision is reduced, and the head The injury value of H is reduced.

  In the passenger seat airbag device 10, the head H of the passenger P of the passenger seat 12 </ b> P contacts the small airbag 32 after contacting the passenger seat airbag 30 and being decelerated. Therefore, the injury value of the head H of the occupant P can be suppressed at a practical level by the small capacity and thin small airbag 32.

  Further, the small airbag 32 has a smaller capacity than the passenger airbag 30. In this embodiment, the small airbag 32 is sized and shaped so as not to interfere with the passenger airbag 30 and the driver airbag 26 in an unconstrained deployed state, and has a sufficiently small capacity with respect to the passenger airbag 30. It is configured compactly.

  Thus, the small airbag 32 having a small capacity is inflated and deployed along the instrument panel 18 from the root of the passenger airbag 30. For this reason, the small airbag 32 is more reliably interposed between the head H of the occupant P that moves obliquely forward toward the center in the vehicle width direction and the instrument panel 18 while having a small capacity. As described above, it contributes to reducing the injury value of the head H of the occupant P. And since the small airbag 32 comprises a bag body different from the passenger seat airbag 30, it can be set as the expansion | deployment form along the instrument panel 18 as above-mentioned.

  Further, the small-capacity small airbag 32 can be folded in a compact manner. For example, as compared with a configuration including an airbag having a capacity that fills the space between the passenger airbag 30 and the driver airbag 26, It can be mounted on a vehicle in a small space. Moreover, since the small airbag 32 is configured to receive gas supply from the passenger airbag 30, it can be configured (installed) more compactly than a configuration that requires a dedicated inflator.

  As described above, in the passenger seat airbag device 10 according to the first embodiment, an occupant that moves obliquely forward toward the center in the vehicle width direction due to a collision while ensuring mountability on the automobile V (vehicle). It is possible to suppress the head H of P from coming into contact with the instrument panel 18.

  Further, as described above, the small airbag 32 does not interfere with the passenger seat airbag 30 and the driver seat airbag 26 in an unconstrained deployed state, and therefore affects the inflation and deployment of the driver seat airbag 26 and the passenger seat airbag 30. There is nothing. For this reason, for example, in the case of a collision that does not require protection of the occupant P by the small airbag 32, such as in the case of a full-wrap frontal collision, the small airbag 32 does not affect the occupant protection performance.

[Other Embodiments]
Next, another embodiment will be described. In addition, about the structure and operation | movement fundamentally similar to 1st Embodiment or preceding embodiment, the same code | symbol as 1st Embodiment or preceding embodiment is provided, and the description and illustration are abbreviate | omitted There is.

<Second Embodiment>
A passenger seat airbag device 50 according to a second embodiment of the present invention will be described with reference to FIG. As shown in this figure, the passenger seat airbag device 50 is different from the passenger seat airbag device 10 in that it includes a small airbag 52 instead of the small airbag 32. The small airbag 52 is different from the small airbag 32 inflated and deployed along the rear surface of the instrument panel 18 in that the small airbag 52 is separated rearward from the instrument panel 18 in an unconstrained deployed state. Other configurations of the passenger seat airbag device 50 are configured in the same manner as the corresponding configurations of the passenger seat airbag device 10 including a portion not shown.

  In the passenger seat airbag device 50, the small airbag 52 is inflated and deployed as the passenger seat airbag 30 is inflated and deployed at the time of a minute lap collision or oblique collision (see the solid line in FIG. 5). The head H of the occupant P that has entered between the passenger seat airbag 30 and the driver seat airbag 26 while pushing away or passing through the passenger seat airbag 30 contacts the small airbag 52. Thereafter, the small airbag 52 moves forward together with the head H and comes into contact with the instrument panel 18 (see the imaginary line in FIG. 5). Thereby, the contact of the head H with the instrument panel 18 is prevented or effectively suppressed. Other functions and effects are the same as the functions of the passenger seat airbag device 10 except for the functions and effects of the small airbag 32 being inflated and deployed along the instrument panel 18.

<Third Embodiment>
A passenger seat airbag device 60 according to a third embodiment of the present invention will be described with reference to FIG. As shown in this figure, the passenger seat airbag device 60 is different from the passenger seat airbag device 10 in that an inner bag 62 as a rectifying member is provided in the passenger seat airbag 30.

  The inner bag 62 surrounds the inflator 28 and is disposed on the base end (front end) side of the passenger seat airbag 30. The inner bag 62 rectifies the gas generated by the inflator 28, and the It is configured to distribute. Specifically, the inner bag 62 has a bag shape and includes an ejection hole 62L that ejects gas toward the left bag 30L and an ejection hole 62R that ejects gas toward the right bag 30R.

  In addition, the inner bag 62 according to this embodiment has an ejection hole 62 </ b> S that ejects gas toward the small airbag 32. The ejection hole 62S is opened inward in the vehicle width direction, and is configured to eject gas from the inflator 28 toward the center side in the vehicle width direction. Other configurations of the passenger seat airbag device 60 are configured in the same manner as the corresponding configurations of the passenger seat airbag device 10 including a portion not shown.

  Therefore, the passenger seat airbag device 60 according to the third embodiment can basically obtain the same effect by the same operation as the passenger seat airbag device 10 according to the first embodiment. Further, in the passenger seat airbag device 60, the gas ejected toward the center in the vehicle width direction by the inner bag 62 is supplied to the small airbag 32. Therefore, the small airbag 32 can be used in a short time from the start of gas supply. It is easy to form along the instrument panel 18. For this reason, it is prevented or effectively suppressed that the small airbag 32 in the inflating and deploying process interferes with the passenger seat airbag 30 and the driver seat airbag 26.

  In the third embodiment, the inner bag 62 has the ejection hole 62S for the small airbag 32. However, the present invention is not limited to this. Therefore, for example, the inner bag 62 may have the left and right ejection holes 62L and 62R and may not have the ejection holes 62S. In this case, the diameter of the ejection hole 62L for the left bag 30L that also serves as a gas supply route to the small airbag 32 may be equal to or larger than the diameter of the ejection hole 62R.

[Other variations]
In each of the above-described embodiments, examples have been shown in which the inflators 24 and 28 are operated in the case of a minute lap collision and an oblique collision, but the present invention is not limited to this. For example, the inflator 24, 28 may be configured to be activated in the case of either a minute lap collision or an oblique collision. In this configuration, when the other of the micro lap collision and the diagonal collision occurs, the occupant is protected by another safety device.

  Further, in each of the above-described embodiments, an example in which the passenger seat airbag 30 is a twin chamber type airbag is shown, but the present invention is not limited to this. For example, the passenger seat airbag 30 may be a single chamber type airbag.

  Furthermore, in each of the above-described embodiments, an example in which the tip of the small airbag 32 is located closer to the passenger seat airbag 30 than the steering wheel 20 is shown, but the present invention is not limited to this. For example, a configuration in which the tip of the small airbag 32 extends to the steering wheel 20 or a configuration that extends to the inside of the steering wheel 20 may be employed.

  In addition, it goes without saying that the present invention can be variously modified and implemented without departing from the scope of the invention.

10 Passenger Seat Airbag Device 12D Driver Seat 12P Passenger Seat 18 Instrument Panel 26 Driver Seat Airbag 30 Passenger Seat Airbag 32 Small Airbag 34, 35 Base Fabric 50, 60 Passenger Seat Airbag Device 52 Small Airbag P Crew

Claims (4)

A passenger airbag that is inflated and deployed behind the instrument panel and in front of the passenger seat upon receiving gas supply;
The passenger seat airbag has a smaller capacity, receives gas supply from the passenger seat airbag, and inflates in the vehicle width direction center side with respect to the passenger seat airbag and in front of the rear end of the passenger seat airbag A small airbag to be deployed,
Passenger seat airbag device.   The small airbag is formed into a bag shape with a separate base fabric from the passenger seat airbag, and is formed on a front end side portion of the side wall facing the vehicle width direction center side of the passenger seat airbag in an inflated and deployed state. The passenger airbag apparatus according to claim 1, wherein the passenger airbag apparatus is joined.   3. The passenger seat airbag apparatus according to claim 2, wherein the small airbag receives gas supply from the passenger seat airbag and is inflated and deployed along the instrument panel.   Each of the small airbag, the passenger airbag, and the passenger airbag that is inflated and deployed in front of the driver's seat is in an inflated and deployed state in which the passenger is not restrained. The passenger seat airbag device according to any one of claims 1 to 3, wherein the passenger seat airbag device is configured not to interfere with a seat airbag.

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